16629666 has 8 divisors (see below), whose sum is σ = 33259344. Its totient is φ = 5543220.

The previous prime is 16629649. The next prime is 16629677. The reversal of 16629666 is 66692661.

It is a sphenic number, since it is the product of 3 distinct primes.

16629666 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385800 + ... + 1385811.

It is an arithmetic number, because the mean of its divisors is an integer number (4157418).

Almost surely, 2^16629666 is an apocalyptic number.

16629666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16629666 is a wasteful number, since it uses less digits than its factorization.

16629666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771616.

The product of its digits is 139968, while the sum is 42.

The square root of 16629666 is about 4077.9487490649. The cubic root of 16629666 is about 255.2473110105.

The spelling of 16629666 in words is "sixteen million, six hundred twenty-nine thousand, six hundred sixty-six".